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參數(shù)資料
| 型號(hào)： | LM95235 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Precision Remote Diode Temperature Sensor with SMBus Interface and TruTherm Technology |
| 中文描述： | 高精度遠(yuǎn)程二極管溫度傳感器，帶有SMBus接口和TruTherm技術(shù) |
| 文件頁數(shù)： | 1/25頁 |
| 文件大?。?/td> | 784K |
| 代理商： | LM95235 |
LM95235
Precision Remote Diode Temperature Sensor with
SMBus Interface and TruTherm
Technology
General Description
The LM95235 is an 11-bit digital temperature sensor with a
2-wire System Management Bus (SMBus) interface and Tru-
Therm technology that can monitor the temperature of a
remote diode as well as its own temperature. The LM95235
can be used to very accurately monitor the temperature of
external devices such as microprocessors, graphics proces-
sors, or a diode-connected MMBT3904 transistor. TruTherm
technology allows the LM95235 to precisely monitor thermal
diodes found in 90 nm and smaller geometry processes.
LM95235 reports temperature in two different formats for
+127.875C/-128C
range
and
0C/255C
range.
LM95235 T_CRIT and OS outputs are asserted when either
unmasked channel exceeds its programmed limit and can be
used to shutdown the system, to turn on the system fans, or
as a microcontroller interrupt function. The current status of
the T_CRIT and OS pins can be read back from the status
registers via the SMBus interface. All limits have a shared
programmable hysteresis register.
The remote temperature channel of the LM95235 has a
programmable digital filter. The LM95235 contains a diode
model selection bit to select between a typical Intel
proces-
sor on a 65 nm or 90 nm process or MMBT3904, as well as
an offset register for maximum flexibility and best accuracy.
The LM95235 has a three-level address pin to connect up to
3 devices to the same SMBus master, that is shared with the
OS output. The LM95235 has a programmable conversion
rate register and a standby mode to save power. One con-
version can be triggered in standby mode by writing to the
one-shot register.
The
Features
n
Remote and Local temperature channels
n
Diode Model Selection Bit - MMBT3904 or 65/90 nm
processor diodes
n
Two Formats: 128C to +127.875C and 0C to 255C
n
Digital filter for remote channel
n
Programmable TCRIT and OS thresholds
n
Programmable shared hysteresis register
n
Diode Fault Detection
n
Mask, Offset, and Status Registers
n
SMBus 2.0 compatible interface, supports TIMEOUT
n
Programmable conversion rate for best power
consumption
n
Three-level address pin
n
Standby mode one-shot conversion control
n
Pin-for-pin compatible with the LM86/LM89
n
8-pin MSOP package
Key Specifications
j
Supply Voltage
j
Supply Current, Conv. Rate = 1 Hz
j
Remote Diode Temperature Accuracy
T
A
= 25C to 85C; T
D
= 60C to 100C
±
0.75C (max)
T
A
= 25C to 85C; T
D
= 40C to 120C
j
Local Temperature Accuracy
T
A
= 25C to 100C
j
Conversion Rate, Both Channels
3.0 V to 3.6 V
350 μA (typ)
±
1.5C (max)
±
2.0C (max)
16 to 0.4 Hz
Applications
n
Processor/Computer System Thermal Management
(e.g. Laptops, Desktops, Workstations, Servers)
n
Electronic Test Equipment
n
Office Electronics
Connection Diagram
MSOP-8
20174902
TOP VIEW
TruTherm
is a trademark of National Semiconductor Corporation.
Intel
is a registered trademark of Intel Corporation.
Pentium
is a registered trademark of Intel Corporation.
Intel
Core
Duo is a trademark of Intel Corporation.
Intel
Core
Solo is a trademark of Intel Corporation.
May 2006
L
T
2006 National Semiconductor Corporation
DS201749
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM95235_08 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Precision Remote Diode Temperature Sensor with SMBus Interface and TruTherm? Technology |
| LM95235CIMM | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| LM95235CIMM | 制造商:Texas Instruments 功能描述:TEMP SENSE REM DIODE SMD MSOP8 |
| LM95235CIMM/NOPB | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| LM95235CIMMX | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
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